Anthurium acutifolium var. acutifolium

Terrestrial or often epilithic; stem 1 cm diam.; roots descending, greenish, smooth to velutinous, elongate, blunt, 2-4 mm diam.; cataphylls subcoriaceous, lanceolate, 6-10 cm long, narrowly rounded to obtuse at apex with a subapical apiculum, dark green, drying dark tan, persisting semi-intact, then as linear fibers, eventually deciduous. LEAVES erect to spreading, occasionally pendent; petioles (2)6-22 cm long, (3)6-9 mm diam., sharply D-shaped to subquadrangular, flattened to broadly sulcate with the margins sharply raised adaxially, sharply 3-ribbed abaxially, surface sparsely pale speckled; geniculum slightly thicker than petiole, 1.4-2.5 cm long; blades subcoriaceous, elliptic to oblanceolate to broadly oblanceolate, gradually acuminate at apex (the acumen apiculate), attenuate to narrowly acute at base, (11)25-62 cm long, (3.5)5.5-27 cm wide, broadest at or above the middle, the margins weakly undulate; both surfaces semiglossy to matte, medium green above, paler below, drying greenish to greenish brown, matte; midrib flat at base, becoming acutely raised toward the apex above, sharply 2-ribbed at base, becoming sharply raised toward the apex below, paler than surface; primary lateral veins 8-12 per side, departing midrib at 40-45° angle, broadly arcuate to straight, acutely raised above, convexly raised below; tertiary veins weakly raised to sunken above, raised and darker than surface below; reticulate veins weakly visible above, obscure below; collective vein arising from about the middle of the blade or near the apex, sunken above, raised below, equally as prominent as primary lateral veins, 3-5 mm from margin. INFLORESCENCES erect to erect-spreading peduncle (17)24-53 cm long, 3-5 mm diam., 3-6 x as long as petiole, angular; spathe reflexed to reflexed-spreading, subcoriaceous, green, linear-lanceolate, 5-12 cm long, 0.6-1.1 cm wide, broadest just above the base, acuminate at apex (the acumen inrolled); spadix green to white to yellow, sometimes tinged with red-violet, sessile, long-tapered, rarely stipitate, to 2 cm, occasionally cylindroid, (4)7-16 cm long, 6-8 mm diam. near base, 3-4 mm diam. near apex; flowers square to rhombic, 1.9-3.4 mm long, 1.7-2.7 mm wide, the sides smoothly to weakly and jaggedly sigmoid; 5-6 flowers visible in principal spiral, 5-7 in alternate spiral; lateral tepals (0.5)l-1.7 mm wide, the inner margins straight, the outer margins 2-3-sided; stigma ellipsoid, 0.3-0.5 mm long; stamens held above tepals in a circle around the pistil, persisting; anthers 0.4-0.5 mm long, 0.6-0.8 mm wide; thecae oblong-ovoid, divaricate. INFRUCTESCENCE 1cm diam., bearing berries in the lower part of the spadix; berries greenish yellow, obovoid to globose, rounded to somewhat mammilliform at apex, 3.8-4.7 mm long, 3.8-4 mm diam.; seeds 2 per berry, yellow-orange, oblong-ovoid, flattened dorsally, 2.9-3.5 mm long, 1.8-2.3 mm diam., 1.5-2 mm thick.